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location&&location.port?location.port:this.secure?443:80),this.transports=e.transports||["websocket"],this.readyState="",this.writeBuffer=[],this.prevBufferLen=0,this.opts=Object.assign({path:"/engine.io",agent:!1,withCredentials:!1,upgrade:!0,jsonp:!0,timestampParam:"t",rememberUpgrade:!1,rejectUnauthorized:!0,perMessageDeflate:{threshold:1024},transportOptions:{}},e),this.opts.path=this.opts.path.replace(//$/,"")+"/","string"==typeof this.opts.query&&(this.opts.query=c.decode(this.opts.query)),this.id=null,this.upgrades=null,this.pingInterval=null,this.pingTimeout=null,this.pingTimeoutTimer=null,"function"==typeof addEventListener&&addEventListener("beforeunload",()=>{this.transport&&(this.transport.removeAllListeners(),this.transport.close())},!1),this.open()}createTransport(t){o('creating transport "%s"',t);const e=function(t){const e={};for(let r in t)t.hasOwnProperty®&&(e[r]=t[r]);return e}(this.opts.query);e.EIO=i.protocol,e.transport=t,this.id&&(e.sid=this.id);const 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